Dear of troy: Not applicable to you, quite possibly, but the biggest cause of heartbreak is forgetting the advice of Ben Franklin to have one's eyes wide open before matrimony, and then keeping them half shut.
I had no grounds for thinking myself entitled to perfection. If my wife had been perfect,the contrast would have made me very uncomfortable.I would never do anything to hurt the kids or lose them

In any event, better to have loved and lost, rather than never to have loved at all.